I tried to publish and subscribe using chatter of topic in ros2-for-unity, but I got the following error. I would like to know how to deal with it.
izakisyotaro@izakisyotaro-CFFV1-1:~$ ros2 topic echo chatter WARNING: topic [chatter] does not appear to be published yet Could not determine the type for the passed topic
https://qiita.com/TakanoTaiga/items/b3cb116c73b9e5624c47
Asked by 1203453 on 2023-03-31 21:15:40 UTC
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